© Edwards Limited 2012. All rights reserved.
Page 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
A750-04-880 Issue F
1
Introduction
1.1
Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards ATEX Category 1, 2 and 3
Liquid Ring Vacuum Pumps (abbreviated to ‘liquid ring pump(s)’ or ‘pump(s)’ in the remainder of this manual).
ATEX Category 1 model pumps are denoted by a “S” suffix on the pump designation, ATEX Category 2 model pumps
are denoted by a "C" suffix on the pump designation and ATEX Category 3 pumps are denoted by a "D" suffix on the
pump designation. For example, "SHR 2400C" specifies an ATEX Category 2 SHR 2400 pump.
Throughout this manual, the "(S/C/D)" annotation specifies that the related data or other information applies to both
the standard model pump and the corresponding ATEX Category 1, 2 and 3 model pumps.
You must use your pump as specified in this manual.
Read this manual before you install and operate your pump. Important safety information is highlighted as WARNING
and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process
The units used throughout this manual conform to the SI international system of units of measurement.
The pump identification and rating plate (refer to the System Manual) provides specific details about the pump,
including: pump type; part number and serial number; and so on.
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
